Water evacuation system in tangential driers



WATER EVACUATION SYSTEM IN TANGENTIAL DRIER Filed June 11, 1943 2Sheets-Sheet l ill/T RESERVOIR MUFFLER INVENTOR.

k, fir/bur 5671mm:

# TTORNE Y Jan. 30, 1945. A. WILLIAMS 2,368,509

WATER EVACUATION SYSTEM IN TANGENTIAL DRIER Filed June 11, 1943 2Sheets-Sheet 2 INVENTOR ari/tar 2271mm:

use and the heat conserved.

Patented Jan. 30, 1945 mm nvnom'rlouasarswsnlm asNea-NrmmnnmnsArthurWilliams,2Munster, "Ina; assignor toThe sllp fiheatcrflompany, NewYork, N. Y.

' Th rplieficntiin lcntlonzrelates toaimprovements mteam :andnwaterseparatorszandxparticularly1to(meansliar:insuringitheeeflicientrdischargerfrom ithfi separator andathe rdisposal sof water :that :is tseparatedifronnthe steam.

(times :lmown gas :a .tangential cdrler. This cap- :paratus :isacommonlyaemployed :jin monnection rwith :locomotive thrillersiforrseparatingzwater abe- :Iore ithe :steam passes :through :the idIyrpipe Ito (the superheater :and ::engines of 1a :locomotive. 'lIFhetangential edrier :is mounted lunch :the -;up-, tturned: end nfrthe:dryepipejmthe Steam'lfimeiand :.:consists of :a Leasing copeneat itstop rto -:provide :a :steam iinlet :and containing :a gseries :of wanesrwhichg ivezthezsteam andxwaterimiatturezaiwhirh ing .moticn within :theteasing causing rthexwatei tofheithrownrofiagainstits walls while thesteam passes throughthe dry pipe to the superheater. The water runs downinto a chamber in the lower part of the drier from which it isdischarged.

In accordance with the present invention a drier of this type has itsoutlets connected to discharge into a receptacle located outside theboiler from which under normal conditions of operation the separatedwater is bled ofi. The

' @neztypeaofsteam and water sep.arator:is-s.ome- 1 tan entially against:the wall ref tthe drier=casin so. that vzit runs =down .zi-n-to 2aichamper w it having zseveralqoutlets {tha ordinarily discharge .-:thetw .vtenhaek. into :theesteam spacelof thelbzoiler.

rIn :accordance with {the presentinvention an outlet d1 l'fromtheichamberl L6 is ;.connec.ted,:by

azpipe 20 ito a cnamjneruor receptacle 12-] ,located puts'ide of tthe:hoiler. :Water entering the preciceptacle e2! :pa-ssesrbyvway .ofarrestricted bleed pipe 122 ihavi g :-.-a {choke :23 therein linto avsteam rlinelk hsubiect 'tczthecontrol-.valvez-thleadin ?from athe:steamtturret the lea-b to supply steam {at lower than fullboiler-pressureztoranxiliaryz'steam econsumcrsrsuch a'szthe stolcergetsflB. "Also con- 9& m w h h ceptacles l :is a :dischar -eecenwhen apredetermined amount or water accumu- 7 thereby to complete anelectrical circuit and water may pass into a steam line supplyingauxiliary steam consumers so that the water from the separator isflashed into steam and returned to When unusual amounts of water arecarried over and pass from the separator into the receptacle, the risingwater makes contact with an electrode arranged to open a valve inanother and larger discharge line from the receptacle.

In the drawings:

Figure 1 is a diagrammatic view of a locomotive boiler equipped with asteam and water separating system embodying the present invention; and

Figure 2 is an enlarged view of the water collecting chamber and controlvalve.

The locomotive boiler is provided with the usual steam dome I 0 fromwhich a dry pipe I] extends forwardly to the superheater and throttleand thence to the engines. The dry pipe; II has an upturned end portionon which is mounted a steam and water separator l2 of the type known,because of its action, as a"tangent ial drier. Such a drier is shown inmy earlier Patent 2,122,630, dated July 5, 1938. In the opera", tion oftheboiler the steam and water mixture enters the drier through an inletI 3 at its top and a whirling motion is imparted thereto. Centrifugalaction causes thewater to be thrown off 55 ties of water enter thedrier. -The discharge I lates in the receptacle the electrode iscontacted cause energization through relay 3| of a valve operatingsolenoid 36 to open a valve 32 in an air line 33 leading from the airreservoir 34 to an air motor whose piston 35 (Fig. 2) is connectedtoopen the valve 28 and thus permit the receptacle 2| and mufiler 29 tobe discharged immediately.

In normal operation the water separated from the steam in thedrier l2passes through the pipe 20 into the receptacle 2| and from the lattervia choke 23 and pipe 22 into the auxiliary steam line 24 where isflashes into steam due to the lower pressure normally maintained in thispipe and is thus disposed of. When such conditions prevail in theoperation of the boiler as would cause-excessively large amounts ofwater to be carried over into the drier I2 the water flowing fromseparating chamber l6 through pipe 20. into the receptacle 2| is ingreater quantity than may be rapidly discharged throughthe choke 23 inpipe 22 and consequently rises to contact the electrode v 30, thereuponthrough the intermediary of the control apparatus described, the valve28 in the discharge conduit 21 is opened so that the unusual largeamount or volume of water may be immediately discharged irom thereceptacle 2l sure at the location of the electrode 30 than exists inthe drier so that when there is an excessive amount of water to bedischarged it flows immediately to the valve control electrode 30 andproduces prompt opening of the valve 28.

What I claim is: 1. In a boiler equipped with a steam and waterseparator mounted within the steam space and having a chamber forreceiving water separated from the steam and one or more outlets fordischarging the separated water; a receptacle so connected with saidoutlets as to receive the separated water therefrom; a restricted bleedpipe connected to said receptacle for discharging water therefrom into aregion of lower than boiler pressure; a second water discharge conduitconnecting the said receptacle with a low pressure region, a normallyclosed .valve in said conduit; means for opening said valve; and meansresponsive to accumulation of a predetermined amount of water in saidreceptacle for causing actuation of said valve opening means to efiectopening of said .valve.

2. In a boiler equipped with a steam and water separator mounted withinthe steam space and having an outlet for discharging the separatedwater; a water discharge conduit connecting said outlet with a region oflower than boiler pressure;

a normally closed valve in said conduit; means forming a collectingchamber in said conduit between said separator outlet and said valve;means associated with said chamber for causing opening of said valveupon accumulation of a predetermined amount of water in said chamber;and a restricted bleed-ofi pipe connected into said conduit closelyadjacent to said chamber and discharging into a region of lower thanboiler pressure for continuously withdrawing small amounts of steam andwater from said conduit so as to maintain said chamber conditioned toreceive fluid in amounts at least correopening of said valve foreffecting quick opening of the latter upon discharge of relativelylarger amounts of water from said separator.

3. In a boiler equipped with a steam and water separator mounted withinthe steam space and having an outlet for discharging the separatedwater; a water discharge conduit connected to said outlet anddischarging into a region of lower than boiler pressure; a normallyclosed valve in said conduit; means associated with said conduit forcausing opening of said valve upon flow of a predetermined volume ofwater through said conduit; and a restricted bleed-ofi pipe connected tosaid conduit between said separator outlet and said valve and closelyadjacent to the latter, said bleed-off pipe discharging into a region oflow pressure for continuously maintaining flow through said conduit soas to maintain the latter conditioned to receive fluid in amounts atleast corresponding to the predetermined amount causing opening of saidvalve for efiecting quick opening of the latter upon discharge ofrelatively larger amounts of water from said separator.

- ARTHUR WILLIAMS.

